(Fortune Small Business) -- Dallas has gone to the dogs. Who's to blame? Try Kelly and Cody Acree. The couple raised $10 million to build Unleashed Indoor Dog Parks, a canine paradise with 25,000 square feet of air-conditioned romping space that opened in March.

The Acrees came up with the business after failing to find a suitable local dog run for Lucas, their adopted Lab mix. "Municipal parks are lacking in a lot of respects, from seating to shade to pet owners not picking up after their dogs," says Kelly, 34.

Dog Fancy editor Susan Chaney sees parks like this taking off in intemperate climates. After all, what happens when triple-digit heat forces Fido to stay home? "A dog without enough exercise is like a toddler who hasn't been allowed to exercise," she observes. "You have a screaming meanie."

According to the Acrees, monthly revenues have reached $200,000 and continue to grow about 10% each month, which should make Unleashed profitable by the end of the year. They're planning two more facilities locally and hope to expand into Milwaukee, Minneapolis and Phoenix.

Even in a recession, Toni Formby, also of Dallas, says the service is worth every penny. She's on disability pay but forks over $7.50 three times a week so she can rest while Matilda, her wire fox terrier, frolics. "I don't eat out," she says. "So I can afford to do this."

My dream is to launch my own business someday. Now that it's time to choose a major, I'm debating if I should major in entrepreneurial studies or major in engineering to acquire a set of skills first. Is majoring in entrepreneurship a good choice? More